The Grandquilter is the same machine, with different labeling, as the Husquvarna Megaquilter and the Janome 1600P (think that's the correct number.
All three are industrial-strength machines made, IIRC, by Janome. They're great, heavy duty, fast machines that do what they're supposed to do really well. Properly maintained they should last for a very very long time.
Cindy uses the Megaquilter version of this machine for piecing and FMQ'ing and loves it, has all the features you need and not a lot of frills, and a reasonable price as well.
I think you'll love it!